Air distributing device



Jan. 25, 1938. F. J. KURTH AIR DISTRIBUTING DEVICE Filed Dec. 25, 1935 )gvENToR FPH/vz Kw? 7w.

ATTORNEY l' atented Jan. 2 5 1938 I I i UNITED STATES PATENT} o FicE" AIR- nrs'rnmurme nnvrcn Franz J. Knrth, New York, N. Y., assignor to.

Anemostat Corporation of America, a col-D- ration of Delaware Application December 23, 1935,8erial No. 55,723

2 Claims. (C1. 98-40) My invention relates to ventilating apparatus gradually increasing in width from the air-inlet and more particularly air distributing devices, "1 or air-conduit outwards. While the said hollow whereby air is introduced into a room without' members may have any desired shape, or be of any sensation of draught being experienced by any desired cross-section,Ipreferably make them 5 the occupants of the room. Such air distributing of quadrangular cross-section widening toward 5 devices are intended to distribute the air in all the outlet so that the hollow members will have directions while simultaneously reducing the the shape of the frustum of a pyramid, for inenergy of flow of the air current, which is accomstance, with the smaller end directed toward the plished by the air current being divided into a air inlet or air-conduit and with the larger end number of separate individual currents for which outwardly directed. But any other desired 10 separate individual air passages of gradually inshape, e. g. that of a prismatoid, may be given creasing cross-section are provided. Such air to the hollow members, or they may be of frustodistributing devices are fully disclosed in Pat-- conical shape, or they may also be of angular ents 1,926,794, 1,926,795 and 1,973,490 issued tocross-section. Whatever be the shape of the me respectively on September 12, 1933 and Sephollow members or individual passages, the di- 15 tember 11,1934. viding partition walls of adjoining members or In said air distributing devices, the air-distribducts are common walls of such adjoining memutor so-called is composed of a plurality of muhere or ducts. If desired, of course, the hollow tually spaced hollow flaring members which, as members constituting the units of the air-disshown in Patent 1,926,794, are either located in tributor can be separately constructed and as- 20 front of one another in the direction of the longisembled into a compact closely fitting structure. tudinal axis of the device, the walls of said mem- With a distributor thus constructed, unequal bers forming obtuse angles with said axis, or, volumes of air can be delivered through the holas shown in Patents 1,926,795 and 1,973,490, are low members or ducts, some being designed to in nested arrangement with each other. distribute'a larger amount of air while some dis- 25 In any of these cases, that is to say, whether tribute a smaller amount of air. Also, predeterthe mutually spaced hollow flaring members are mined 'volumes of air can be distributed by the disposed in front of one another or are in nested inlet ends of the hollow members or ducts by arrangement with *each other, the air is thereby being made correspondingly larger or smaller.

89 divided into a number of concentric separate air For the purpose or a fuller understanding of currents radiating in all directions from a commy invention, I have illustrated various embodimon central axis. ments of the same on the herewith appended The air distributing device according to the drawing, on which Fig. 1 is a perspective view of present invention is based more or less on the my new air distributing device, some of the sepasame principle involved in the air distributing derate air ducts being shown in broken lines; Fig. 2 35 -vices of the above mentioned patents in that'the is a bottom view of Fig. 1', looking toward the air supply of air is divided into a number of separate conduit; Figs. 3 and 4 are similar bottom plan individual air currents flowing through separate 1 views of modified constructions. individual passages gradually increasing in cross- In the embodiment of my new air distributing 40 section toward the discharge end. In accordance device shown in Fig. 1, the air-inlet or air-con- 40 with this invention, however, the separate air duit is shown at i. At 2, 3, 4 etc., are indicated passages are not concentrically grouped about a hollow members. or passages of widening crosscommon central axis resulting in radial air cursection connected to, and terminating in, the said rents radiating in all directions from said central air-conduit I with their smaller endsv and proaxis, but the individual air passages are so formed jecting outwardly therefrom with their larger 45 as to be juxtaposed or contiguous to one another, ends. In the embodiment shown in Fig. 1, the the distributor having a honey-comb appearance, hollow members have the shape of a frustum of a except that the separate passages are of vgradupyramid and are contiguously disposed, so'that ally increasing cross-section toward the disa the distributor when viewed from the bottom has charge nd, the appearance of a honey-comb. When the de- 50 In the air-distributing device according to the vice is used for the distribution of air, the air suppresent invention, therefore, the air-distributor plied to the air-inlet I flows through the various proper comprises a number of contiguously dishollowmembers or passages in the direction of posed hollow members or ducts extending outthe arrows, being divided by said members or paswardly from an air-inlet or air-conduit, and. sages into a corresponding number of separate 55 individual air currents. The inlet size of the several hollow members or passages is made for the distribution of either equal or unequal amounts of air to be supplied to the various members or passages. vIn either case, the energy of flow of these separate individual air currents is being decreased toward the outlet ends of the members because of their gradually widening cross-section. The number of the hollow members or passages, their size and length are determined by the volume of air to be supplied during a given unit of time. Also a means may be provided for either partly or entirely closing one or more of the hollow members and passages to thereby prevent a current of air from passing therethrough or to regulate the volume of the air current. Such a means is shown in Fig. 1, where 5 denotes a damper designed to partially or wholly close the inlet end of one of the hollow members or passages.

Fig. 2 shows a bottom view of the device shown in Fig. 1 looking in the direction toward the airinlet or air conduit i.

Figs. 3 and 4 are similar views as Fig. 2, showing modifications of the hollow members, which according to Fig. 3 are of angular shape, while according to Fig. 4, they are of irregular shape.

In either or these modified embodiments, however, the hollow members or passages are likewise contiguously disposed having common partition walls, and are also of increasing cross-section toward their outlet or discharge ends.

Unnecessary to say, the air-distributor instead of being composed of a. plurality of separate individual hollow members may also be made of a single solid piece in which ducts of corresponding shape and cross-section are formed.

I claim:

1. In an air distributing device, the combination of a flaring truncated hollow casing and a plurality of intersecting partitions extending through said casing in fixed relation thereto and to each other and being so disposed as to divide said casing into a plurality of flaring truncated closed ducts open at their ends for the distribution therethrough of predetermined invariable volumes of air.

2. The combination as specified in claim 1, in which the inner and outer ends of said partitions are situated in common planes with the inner and outer edges of the, casing respectively.

FRANZ J. KUR'I'H. 

